/* =========================================================
   飞驰炸金花 · CN 中文站 V3.1
   /assets/site.css —— 共享外壳与通用组件
   轨道导航 / 框景刻度 / 牌面层叠 / 编辑部索引
   ========================================================= */

/* ---------- 01 Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  background: #07111F;
}

body, h1, h2, h3, h4, h5, p, figure, blockquote, dl, dd, ol, ul, fieldset, legend {
  margin: 0;
}

ol, ul { padding: 0; list-style: none; }
img, svg, picture, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
hr { border: 0; }

/* ---------- 02 Tokens ---------- */
:root {
  --ink: #07111F;
  --ink-2: #0D1B2E;
  --ink-3: #050C16;
  --flame: #FF4D1F;
  --flame-deep: #A82A12;
  --cyan: #19E3D1;
  --cyan-deep: #0A9C90;
  --gold: #E8C878;
  --paper: #F4F1EA;
  --mist: #8EA1B8;
  --line: #5C7C86;
  --ok: #5BE38A;

  --line-soft: rgba(92, 124, 134, 0.32);
  --line-faint: rgba(92, 124, 134, 0.16);
  --paper-soft: rgba(244, 241, 234, 0.82);

  --rail-w: 264px;
  --content-max: 1280px;
  --gutter: clamp(18px, 4vw, 48px);
  --radius: 2px;

  --font-display: "HelveticaNeue-CondensedBold", "Helvetica Neue", "Arial Narrow",
    "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans SC",
    "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans SC",
    "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;

  --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 03 Base ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--paper);
  background-color: var(--ink);
  background-image:
    radial-gradient(1100px 560px at 88% -8%, rgba(255, 77, 31, 0.15), transparent 62%),
    radial-gradient(820px 480px at 4% 4%, rgba(25, 227, 209, 0.10), transparent 60%),
    linear-gradient(180deg, #07111F 0%, #050C16 100%);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection { background: var(--flame); color: #14070A; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 2px;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--paper);
}

h1 { font-size: clamp(2.4rem, 6.4vw, 5rem); }
h2 { font-size: clamp(1.65rem, 3.4vw, 2.55rem); }
h3 { font-size: clamp(1.15rem, 1.9vw, 1.5rem); font-weight: 400; }
h4 { font-size: 1rem; font-weight: 700; line-height: 1.45; letter-spacing: 0.01em; }

p { line-height: 1.8; }

#main-content {
  display: block;
  scroll-margin-block-start: 84px;
}

/* ---------- 04 Skip Link ---------- */
.skip-link {
  position: fixed;
  inset-block-start: 10px;
  inset-inline-start: 10px;
  z-index: 400;
  padding: 10px 18px;
  background: var(--flame);
  color: #14070A;
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: var(--radius);
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.5);
  transform: translateY(-180%);
  transition: transform 0.2s var(--ease-out);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: 2px solid var(--paper);
  outline-offset: 2px;
}

/* ---------- 05 Rail Header ---------- */
.rail {
  position: fixed;
  inset-block: 0;
  inset-inline-start: 0;
  width: var(--rail-w);
  z-index: 120;
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 26px 20px 22px;
  background: linear-gradient(184deg, #0D1B2E 0%, #07111F 62%, #050C16 100%);
  border-inline-end: 1px solid var(--line-soft);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.rail::before {
  content: "";
  position: absolute;
  inset-block-start: 0;
  inset-inline: 0;
  height: 130px;
  background: linear-gradient(118deg, rgba(255, 77, 31, 0.22), rgba(25, 227, 209, 0.06) 46%, transparent 68%);
  clip-path: polygon(0 0, 100% 0, 100% 46%, 0 100%);
  pointer-events: none;
}

.rail::after {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-end: 0;
  width: 10px;
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(92, 124, 134, 0.55) 0 1px,
    transparent 1px 14px
  );
  opacity: 0.6;
  pointer-events: none;
}

/* --- brand --- */
.rail__brand {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.rail__logo {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
}

.rail__logo-mark {
  flex: none;
  width: 38px;
  aspect-ratio: 2 / 3;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  color: #14070A;
  background: linear-gradient(160deg, #FF6A3D 0%, var(--flame) 45%, var(--flame-deep) 100%);
  border-radius: 3px;
  box-shadow:
    0 8px 20px rgba(255, 77, 31, 0.28),
    inset 0 0 0 1px rgba(232, 200, 120, 0.55);
}

.rail__logo-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.rail__logo-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--paper);
  white-space: nowrap;
}

.rail__logo-sub {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--mist);
  white-space: nowrap;
}

/* --- hamburger --- */
.rail__toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 44px;
  height: 44px;
  flex: none;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(13, 27, 46, 0.8);
  transition: border-color 0.18s var(--ease-out), background-color 0.18s var(--ease-out);
}

.rail__toggle:hover { border-color: var(--cyan); }

.rail__toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--paper);
  transition: background-color 0.18s var(--ease-out);
}

.rail[data-open] .rail__toggle-bar { background: var(--flame); }

/* --- nav --- */
.rail__nav {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
}

.rail__nav-head,
.rail__nav-foot { display: none; }

.rail__nav-title {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
}

.rail__close {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  font-size: 1.35rem;
  line-height: 1;
  color: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  transition: color 0.18s var(--ease-out), border-color 0.18s var(--ease-out);
}

.rail__close:hover { color: var(--flame); border-color: var(--flame); }

.rail__list {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.rail__item { display: block; }

.rail__link {
  position: relative;
  display: grid;
  grid-template-columns: 2rem 1fr;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px 9px 12px;
  border-inline-start: 2px solid transparent;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--mist);
  transition:
    color 0.16s var(--ease-out),
    background-color 0.16s var(--ease-out),
    border-color 0.16s var(--ease-out);
}

.rail__link:hover,
.rail__link:focus-visible {
  color: var(--paper);
  background: rgba(25, 227, 209, 0.08);
  border-inline-start-color: var(--cyan);
}

.rail__link[aria-current="page"] {
  color: var(--paper);
  font-weight: 700;
  border-inline-start-color: var(--flame);
  background: linear-gradient(90deg, rgba(255, 77, 31, 0.22), rgba(255, 77, 31, 0) 78%);
}

.rail__index {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--line);
  transition: color 0.16s var(--ease-out);
}

.rail__link:hover .rail__index,
.rail__link:focus-visible .rail__index { color: var(--cyan); }

.rail__link[aria-current="page"] .rail__index { color: var(--flame); }

.rail__label { font-size: 0.95rem; letter-spacing: 0.01em; }

/* --- rail aside --- */
.rail__aside {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-block-start: auto;
  padding-block-start: 18px;
  border-block-start: 1px solid var(--line-faint);
}

.rail__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: flex-start;
  padding: 9px 15px;
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #14070A;
  background: var(--flame);
  border-radius: var(--radius);
  box-shadow: 0 3px 0 var(--flame-deep);
  transition:
    transform 0.16s var(--ease-out),
    background-color 0.16s var(--ease-out),
    box-shadow 0.16s var(--ease-out);
}

.rail__cta:hover,
.rail__cta:focus-visible {
  background: #FF6438;
  transform: translateY(-2px);
  box-shadow: 0 5px 0 var(--flame-deep);
}

.rail__cta:active { transform: translateY(1px); box-shadow: 0 2px 0 var(--flame-deep); }

.rail__meta {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--line);
}

.rail__scrim { display: none; }

/* ---------- 06 Footer ---------- */
.foot {
  position: relative;
  margin-block-start: clamp(48px, 8vw, 96px);
  padding-block: clamp(38px, 6vw, 68px) 26px;
  background:
    linear-gradient(180deg, rgba(13, 27, 46, 0.92) 0%, rgba(5, 12, 22, 0.99) 100%);
  border-block-start: 1px solid var(--line-soft);
}

.foot::before {
  content: "";
  position: absolute;
  inset-block-start: 0;
  inset-inline: 0;
  height: 9px;
  background-image: repeating-linear-gradient(
    to right,
    rgba(92, 124, 134, 0.55) 0 1px,
    transparent 1px 18px
  );
  opacity: 0.55;
  pointer-events: none;
}

.foot__inner {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.foot__brand {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 5vw, 3.2rem);
  font-weight: 300;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.foot__line {
  margin-block-start: 8px;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.foot__badge {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-block-start: 18px;
}

.foot__cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: clamp(22px, 3vw, 44px);
  margin-block-start: clamp(28px, 5vw, 46px);
  padding-block-start: clamp(22px, 3vw, 30px);
  border-block-start: 1px solid var(--line-faint);
}

.foot__col { min-width: 0; }

.foot__head {
  margin-block-end: 14px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
}

.foot__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.foot__link {
  display: inline-block;
  font-size: 0.94rem;
  color: var(--mist);
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 4px;
  transition: color 0.16s var(--ease-out), text-decoration-color 0.16s var(--ease-out);
}

.foot__link:hover,
.foot__link:focus-visible {
  color: var(--paper);
  text-decoration-color: var(--flame);
}

.foot__contact {
  display: grid;
  grid-template-columns: 2.6rem 1fr;
  gap: 4px 10px;
  align-items: start;
}

.foot__k {
  padding-block-start: 3px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  color: var(--line);
}

.foot__v {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.foot__note {
  margin-block-start: 14px;
  padding-inline-start: 12px;
  border-inline-start: 2px solid var(--line-soft);
  font-size: 0.79rem;
  line-height: 1.7;
  color: var(--line);
}

.foot__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  margin-block-start: clamp(24px, 4vw, 40px);
  padding-block-start: 18px;
  border-block-start: 1px solid var(--line-faint);
  font-size: 0.76rem;
  color: var(--line);
}

.foot__copy { font-size: 0.76rem; color: var(--line); }

.foot__icp {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* ---------- 07 Generic Layout ---------- */
.wrap {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(36px, 6vw, 72px); }

.grid {
  display: grid;
  gap: clamp(14px, 2vw, 24px);
}

.grid--2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }

/* ---------- 08 Type Helpers ---------- */
.mono {
  font-family: var(--font-mono);
  font-size: 0.88em;
  letter-spacing: 0.02em;
}

.lead {
  max-width: 62ch;
  font-size: clamp(1.02rem, 1.5vw, 1.2rem);
  line-height: 1.85;
  color: var(--paper-soft);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  flex: none;
  background: var(--cyan);
}

.rule {
  height: 1px;
  margin-block: clamp(24px, 4vw, 40px);
  background: linear-gradient(90deg, var(--line) 0%, rgba(92, 124, 134, 0) 82%);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  font-size: 0.71rem;
  letter-spacing: 0.08em;
  line-height: 1.6;
  color: var(--mist);
  background: rgba(13, 27, 46, 0.7);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  white-space: nowrap;
}

.tag--flame {
  color: #FFB9A4;
  background: rgba(255, 77, 31, 0.14);
  border-color: rgba(255, 77, 31, 0.5);
}

.tag--cyan {
  color: #9DF6EE;
  background: rgba(25, 227, 209, 0.1);
  border-color: rgba(25, 227, 209, 0.45);
}

.tag--gold {
  color: var(--gold);
  background: rgba(232, 200, 120, 0.08);
  border-color: rgba(232, 200, 120, 0.45);
}

/* ---------- 09 Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 12px 22px;
  font-size: 0.94rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition:
    transform 0.16s var(--ease-out),
    background-color 0.16s var(--ease-out),
    border-color 0.16s var(--ease-out),
    color 0.16s var(--ease-out),
    box-shadow 0.16s var(--ease-out);
}

.btn--flame {
  color: #14070A;
  background: var(--flame);
  box-shadow: 0 3px 0 var(--flame-deep);
}

.btn--flame:hover,
.btn--flame:focus-visible {
  background: #FF6438;
  transform: translateY(-2px);
  box-shadow: 0 5px 0 var(--flame-deep);
}

.btn--cyan {
  color: #03231F;
  background: var(--cyan);
  box-shadow: 0 3px 0 var(--cyan-deep);
}

.btn--cyan:hover,
.btn--cyan:focus-visible {
  background: #4CF0E0;
  transform: translateY(-2px);
  box-shadow: 0 5px 0 var(--cyan-deep);
}

.btn--ghost {
  color: var(--paper);
  background: transparent;
  border-color: var(--line);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.btn:active { transform: translateY(1px); box-shadow: 0 2px 0 var(--flame-deep); }

/* ---------- 10 Frame / Card / Media ---------- */
.frame {
  position: relative;
  padding: clamp(20px, 3.2vw, 36px);
  background: linear-gradient(160deg, rgba(13, 27, 46, 0.92) 0%, rgba(7, 17, 31, 0.92) 100%);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}

.frame::before,
.frame::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 1px solid var(--cyan);
  opacity: 0.65;
  pointer-events: none;
}

.frame::before {
  inset-block-start: -1px;
  inset-inline-start: -1px;
  border-inline-end: 0;
  border-block-end: 0;
}

.frame::after {
  inset-block-end: -1px;
  inset-inline-end: -1px;
  border-inline-start: 0;
  border-block-start: 0;
}

.card {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
  background: linear-gradient(165deg, rgba(13, 27, 46, 0.96) 0%, rgba(7, 17, 31, 0.96) 100%);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  transition:
    transform 0.18s var(--ease-out),
    border-color 0.18s var(--ease-out),
    box-shadow 0.18s var(--ease-out);
}

.card:hover {
  transform: translateY(-2px);
  border-color: rgba(25, 227, 209, 0.55);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.45);
}

.media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background:
    linear-gradient(142deg, rgba(25, 227, 209, 0.16) 0%, rgba(13, 27, 46, 0.9) 46%, rgba(255, 77, 31, 0.18) 100%);
}

.media > img,
.media > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(116deg, rgba(25, 227, 209, 0.26) 0%, transparent 40%, rgba(255, 77, 31, 0.22) 76%, transparent 100%);
  mix-blend-mode: screen;
  opacity: 0.6;
  pointer-events: none;
}

.media--card { aspect-ratio: 2 / 3; }
.media--wide { aspect-ratio: 21 / 9; }
.media--square { aspect-ratio: 1 / 1; }

/* ---------- 11 Breadcrumbs & Prose ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--line);
}

.crumbs a {
  color: var(--mist);
  transition: color 0.16s var(--ease-out);
}

.crumbs a:hover,
.crumbs a:focus-visible { color: var(--cyan); }

.crumbs__sep { color: var(--line-faint); }

.prose {
  max-width: 68ch;
  font-size: 1.03rem;
  line-height: 1.9;
  color: var(--paper-soft);
}

.prose > * + * { margin-block-start: 1em; }

.prose h2 {
  margin-block-start: 1.8em;
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  color: var(--paper);
}

.prose h3 {
  margin-block-start: 1.5em;
  color: var(--paper);
}

.prose ul,
.prose ol {
  padding-inline-start: 1.3em;
  list-style: disc;
}

.prose ol { list-style: decimal; }
.prose li + li { margin-block-start: 0.4em; }

.prose a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 12 Scroll Progress & Reveal ---------- */
.scroll-progress {
  position: fixed;
  inset-block-start: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 300;
  background: linear-gradient(90deg, var(--flame) 0%, var(--gold) 46%, var(--cyan) 100%);
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
  transition: transform 0.08s linear;
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity 0.34s var(--ease-out),
    transform 0.34s var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}

.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 13 Tablet ---------- */
@media (max-width: 1023px) {
  .rail {
    position: sticky;
    inset: auto;
    top: 0;
    width: 100%;
    flex-direction: row;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    overflow: visible;
    background: rgba(7, 17, 31, 0.97);
    border-inline-end: 0;
    border-block-end: 1px solid var(--line-soft);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.42);
  }

  .rail::before,
  .rail::after { display: none; }

  .rail__brand {
    flex: 1 1 auto;
    min-width: 0;
  }

  .rail__toggle { display: flex; }

  .rail__nav {
    position: fixed;
    inset-block: 0;
    inset-inline-end: 0;
    width: min(340px, 88vw);
    z-index: 140;
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 18px 22px 28px;
    background: linear-gradient(184deg, #0D1B2E 0%, #050C16 100%);
    border-inline-start: 1px solid var(--line-soft);
    box-shadow: -28px 0 70px rgba(0, 0, 0, 0.6);
    transform: translateX(103%);
    transition: transform 0.28s var(--ease-out);
    overflow-y: auto;
    overscroll-behavior: contain;
  }

  .rail[data-open] .rail__nav { transform: translateX(0); }

  .rail__nav-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding-block-end: 14px;
    border-block-end: 1px solid var(--line-faint);
  }

  .rail__nav-foot {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-block-start: auto;
    padding-block-start: 16px;
    border-block-start: 1px solid var(--line-faint);
  }

  .rail__link { padding: 12px 10px 12px 12px; }
  .rail__label { font-size: 1rem; }

  .rail__scrim {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 130;
    background: rgba(4, 8, 15, 0.74);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.24s var(--ease-out);
  }

  .rail[data-open] .rail__scrim {
    opacity: 1;
    pointer-events: auto;
  }

  .rail[data-open] .rail__toggle-bar { background: var(--flame); }

  html.nav-open,
  html.nav-open body { overflow: hidden; }

  .foot { margin-block-start: clamp(36px, 8vw, 64px); }
}

/* ---------- 14 Phone ---------- */
@media (max-width: 599px) {
  :root { --gutter: 18px; }

  .rail { padding: 9px 14px; }
  .rail__logo-mark { width: 32px; font-size: 1rem; }
  .rail__logo-name { font-size: 0.96rem; }
  .rail__logo-sub { font-size: 0.58rem; }

  .foot__cols { grid-template-columns: 1fr; gap: 24px; }
  .foot__base { flex-direction: column; align-items: flex-start; }
  .foot__contact { grid-template-columns: 1fr; gap: 2px 0; }
  .foot__k { padding-block-start: 0; }

  .btn { width: 100%; }
  .rail__cta { align-self: stretch; text-align: center; }
}

/* ---------- 15 Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    transition-delay: 0ms !important;
    scroll-behavior: auto !important;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .card:hover,
  .rail__cta:hover,
  .btn:hover {
    transform: none;
  }

  .media::after { opacity: 0.35; }
}